package com.system.util;


import java.awt.Graphics2D;  
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;  
  
/**
 * @ClassName:  ImageUtil   
 * @Description:将jpg图片转为png图片并将背景颜色转为透明工具类  (背景暂时只能为白色)
 * @author: Mr.Yu 
 * @date:   2018年2月27日   
 * @Copyright: 2018 www.rongyaohk.com Inc. All rights reserved.
 */
public class ImageUtil {  
	
	public static String showimg;
  
    public static void convert(String path) {  
        try {  
            BufferedImage image = ImageIO.read(new File(path));  
            ImageIcon imageIcon = new ImageIcon(image);  
            BufferedImage bufferedImage = new BufferedImage(  
                    imageIcon.getIconWidth(), imageIcon.getIconHeight(),  
                    BufferedImage.TYPE_4BYTE_ABGR);  
            Graphics2D g2D = (Graphics2D) bufferedImage.getGraphics();  
            g2D.drawImage(imageIcon.getImage(), 0, 0,  
                    imageIcon.getImageObserver());  
            int alpha = 0;  
            for (int j1 = bufferedImage.getMinY(); j1 < bufferedImage  
                    .getHeight(); j1++) {  
                for (int j2 = bufferedImage.getMinX(); j2 < bufferedImage  
                        .getWidth(); j2++) {  
                    int rgb = bufferedImage.getRGB(j2, j1);  
                    if (colorInRange(rgb))  
                        alpha = 0;  
                    else  
                        alpha = 255;  
                    rgb = (alpha << 24) | (rgb & 0x00ffffff);  
                    bufferedImage.setRGB(j2, j1, rgb);  
                }  
            }  
            g2D.drawImage(bufferedImage, 0, 0, imageIcon.getImageObserver());  
            // 生成图片为PNG  
            String outFile = path.substring(0, path.lastIndexOf("."));  
            FileOutputStream fileOutputStream = new FileOutputStream(outFile + ".png");
            System.out.println("fileOutputStream:"+fileOutputStream);
            ImageIO.write(bufferedImage, "png",fileOutputStream); 
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }  
  
    public static int color_range = 210;  
    public static boolean colorInRange(int color) {  
        int red = (color & 0xff0000) >> 16;  
        int green = (color & 0x00ff00) >> 8;  
        int blue = (color & 0x0000ff);  
        if (red >= color_range && green >= color_range && blue >= color_range)  
            return true;  
        return false;  
    }  
    
    public static void main(String[] args) {
		ImageUtil.convert("C:/Users/YASUO/Desktop/1.png");
	}
    
}
/*public class ImageUtil {  
	
	public static String showimg;
  
    public static void convert(String path) {  
        try {  
            BufferedImage image = ImageIO.read(new File(path));  
            ImageIcon imageIcon = new ImageIcon(image);  
            BufferedImage bufferedImage = new BufferedImage(  
                    imageIcon.getIconWidth(), imageIcon.getIconHeight(),  
                    BufferedImage.TYPE_4BYTE_ABGR);  
            Graphics2D g2D = (Graphics2D) bufferedImage.getGraphics();  
            g2D.drawImage(imageIcon.getImage(), 0, 0,  
                    imageIcon.getImageObserver());  
            int alpha = 0;  
            for (int j1 = bufferedImage.getMinY(); j1 < bufferedImage  
                    .getHeight(); j1++) {  
                for (int j2 = bufferedImage.getMinX(); j2 < bufferedImage  
                        .getWidth(); j2++) {  
                    int rgb = bufferedImage.getRGB(j2, j1);  
                    if (colorInRange(rgb))  
                        alpha = 0;  
                    else  
                        alpha = 255;  
                    rgb = (alpha << 24) | (rgb & 0x00ffffff);  
                    bufferedImage.setRGB(j2, j1, rgb);  
                }  
            }  
            g2D.drawImage(bufferedImage, 0, 0, imageIcon.getImageObserver());  
            // 生成图片为PNG  
            String outFile = path.substring(0, path.lastIndexOf("."));  
            FileOutputStream fileOutputStream = new FileOutputStream(outFile + ".png");
            System.out.println("fileOutputStream:"+fileOutputStream);
            ImageIO.write(bufferedImage, "png",fileOutputStream); 
        } catch (IOException e) {  
            e.printStackTrace();  
        }  
    }  
  
    public static int color_range = 210;  
    public static boolean colorInRange(int color) {  
        int red = (color & 0xff0000) >> 16;  
        int green = (color & 0x00ff00) >> 8;  
        int blue = (color & 0x0000ff);  
        if (red >= color_range && green >= color_range && blue >= color_range)  
            return true;  
        return false;  
    }  
    
    public static void main(String[] args) {
		ImageUtil.convert("C:/Users/YASUO/Desktop/1.png");
	}
}*/